This page explains how Winfred Addy (USATT# 12948)'s rating went from 2217 to 2260 at the Irving Round Robin held on - 13 Mar 2005. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.